Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photo: Courtesy San Antonio Fire Department

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Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photo: Courtesy San Antonio Fire Department

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Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photo: Courtesy San Antonio Fire Department

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Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photo: Courtesy San Antonio Fire Department

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Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photo: Courtesy San Antonio Fire Department

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Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photo: Courtesy San Antonio Fire Department

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Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photo: Courtesy San Antonio Fire Department

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Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photo: Courtesy San Antonio Fire Department

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Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photos provided by the San Antonio Fire Department show efforts by firefighters to rescue a teenage girl from Robber Baron Cave Thursday, March 8, 2018.

Photo: Courtesy San Antonio Fire Department

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Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Photo: Ken Branca

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Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Photo: Ken Branca

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Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Photo: Ken Branca

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Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Photo: Ken Branca

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Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Photo: Ken Branca

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Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Photo: Ken Branca

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Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Photo: Ken Branca

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Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Photo: Ken Branca

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Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Photo: Jacob Beltran

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Emergency personnel work Thursday, March 8, 2018 to free an 18-year-old L.E.E. High School student from Robber Baron Cave near the intersection of Nacogdoches Rd. and N. New Braunfels. Officials said the girl got stuck in a section of the cave called "Hole in the Floor" 350 feet from the entrance during a school field trip. less

Emergency personnel work Thursday, March 8, 2018 to free an 18-year-old L.E.E. High School student from Robber Baron Cave near the intersection of Nacogdoches Rd. and N. New Braunfels. Officials said the girl ... more

Photo: William Luther, San Antonio Express-News

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Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Photo: Jacob Beltran

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Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Photo: Jacob Beltran

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Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday March 8, 2018 after she became trapped there during a school field trip.

Photo: Jacob Beltran

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Emergency personnel work Thursday, March 8, 2018 to free an 18-year-old L.E.E. High School student from Robber Baron Cave near the intersection of Nacogdoches Rd. and N. New Braunfels. Officials said the girl got stuck in a section of the cave called "Hole in the Floor" 350 feet from the entrance during a school field trip. less

Emergency personnel work Thursday, March 8, 2018 to free an 18-year-old L.E.E. High School student from Robber Baron Cave near the intersection of Nacogdoches Rd. and N. New Braunfels. Officials said the girl ... more

Photo: William Luther, San Antonio Express-News

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Emergency personnel work Thursday, March 8, 2018 to free an 18-year-old L.E.E. High School student from Robber Baron Cave near the intersection of Nacogdoches Rd. and N. New Braunfels. Officials said the girl got stuck in a section of the cave called "Hole in the Floor" 350 feet from the entrance during a school field trip. less

Emergency personnel work Thursday, March 8, 2018 to free an 18-year-old L.E.E. High School student from Robber Baron Cave near the intersection of Nacogdoches Rd. and N. New Braunfels. Officials said the girl ... more

Photo: William Luther, San Antonio Express-News

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Emergency personnel work Thursday, March 8, 2018 to free an 18-year-old L.E.E. High School student from Robber Baron Cave near the intersection of Nacogdoches Rd. and N. New Braunfels. Officials said the girl got stuck in a section of the cave called "Hole in the Floor" 350 feet from the entrance during a school field trip. less

Emergency personnel work Thursday, March 8, 2018 to free an 18-year-old L.E.E. High School student from Robber Baron Cave near the intersection of Nacogdoches Rd. and N. New Braunfels. Officials said the girl ... more

Photo: William Luther, San Antonio Express-News

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Police began shutting down the roads leading to Robber Baron cave as the San Antonio Fire Department worked to rescue a teen girl trapped inside the cave.

Police began shutting down the roads leading to Robber Baron cave as the San Antonio Fire Department worked to rescue a teen girl trapped inside the cave.

Photo: Tiffany Heikkila

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Steps lead to the entrance of Robber Baron Cave in Alamo Heights, where a teen is trapped. Click ahead to see images inside the cave.

Steps lead to the entrance of Robber Baron Cave in Alamo Heights, where a teen is trapped. Click ahead to see images inside the cave.

Photo: EN Communities 2014

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UTSA student Casey Bordelon crawls through a passageway on a tour of the Robber Baron Cave, believed to be the longest cave in Bexar County.

UTSA student Casey Bordelon crawls through a passageway on a tour of the Robber Baron Cave, believed to be the longest cave in Bexar County.

Photo: Marvin Pfeiffer / San Antonio Express-News

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Students from the Mechanical Engineering Department at UTSA climb through a passageway of the Robber Baron Cave. The students are developing equipment for cave divers to measure high levels of CO {-2} found in the cave.

Stephanie Guzman watches asJoe Mitchell (right) with Texas Cave Management Association, talks about Robber Baron Cave during a tour on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in Bexar County with one mile of mapped passage. Photo by Marvin Pfeiffer / EN Communities less

Kathy Mandt makes her way though the Walking-0n-the-Walls passage on a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in Bexar County with one mile of mapped passage. Photo by Marvin Pfeiffer / EN Communities less

Kathy Mandt makes her way though the Walking-0n-the-Walls passage on a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the ... more

Photo: MARVIN PFEIFFER, Marvin Pfeiffer / EN Communities

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John Delgado (left) drops down a chute with the help of Michael Harris on a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in Bexar County with one mile of mapped passage. Photo by Marvin Pfeiffer / EN Communities less

John Delgado (left) drops down a chute with the help of Michael Harris on a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the ... more

Photo: MARVIN PFEIFFER, Marvin Pfeiffer / EN Communities

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A sign at the start of a trail (left) leading to the entrance to Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in Bexar County with one mile of mapped passage. Photo by Marvin Pfeiffer / EN Communities less

A sign at the start of a trail (left) leading to the entrance to Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of ... more

Photo: MARVIN PFEIFFER, Marvin Pfeiffer / EN Communities

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Casey Bordelon crawls though a chute passageway into the Chapel Room on a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in Bexar County with one mile of mapped passage. Photo by Marvin Pfeiffer / EN Communities less

Casey Bordelon crawls though a chute passageway into the Chapel Room on a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the ... more

Photo: MARVIN PFEIFFER, Marvin Pfeiffer / EN Communities

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John Delgado, a student at UTSA, crawls though a passageway on a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in Bexar County with one mile of mapped passage. Photo by Marvin Pfeiffer / EN Communities less

John Delgado, a student at UTSA, crawls though a passageway on a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and ... more

Photo: MARVIN PFEIFFER, Marvin Pfeiffer / EN Communities

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A passageway in Robber Baron Cave called "The Man" on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in Bexar County with one mile of mapped passage. Photo by Marvin Pfeiffer / EN Communities less

A passageway in Robber Baron Cave called "The Man" on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in ... more

Photo: MARVIN PFEIFFER, Marvin Pfeiffer / EN Communities

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Casey Bordelon crawls through a passageway as others follow behind on a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in Bexar County with one mile of mapped passage. Photo by Marvin Pfeiffer / EN Communities less

Casey Bordelon crawls through a passageway as others follow behind on a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the ... more

Photo: MARVIN PFEIFFER, Marvin Pfeiffer / EN Communities

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Joe Mitchell (right) and Michael Harris with Texas Cave Management Association, at the entrance to the Graffiti Room on a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in Bexar County with one mile of mapped passage. Photo by Marvin Pfeiffer / EN Communities less

Joe Mitchell (right) and Michael Harris with Texas Cave Management Association, at the entrance to the Graffiti Room on a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the ... more

Photo: MARVIN PFEIFFER, Marvin Pfeiffer / EN Communities

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Michael Harris (left) and Joe Mitchell with Texas Cave Management Association, stand in the Graffiti Room during a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in Bexar County with one mile of mapped passage. Photo by Marvin Pfeiffer / EN Communities less

Michael Harris (left) and Joe Mitchell with Texas Cave Management Association, stand in the Graffiti Room during a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of ... more

Photo: MARVIN PFEIFFER, Marvin Pfeiffer / EN Communities

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Stephanie Guzman stands above the entrane to Robber Baron Cave (right) as Joe Mitchell with Texas Cave Managment Association opens the gate on Wednesday, Sept. 24, 2014. The original entrance to the cave, now closed, is between them. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in Bexar County with one mile of mapped passage. Photo by Marvin Pfeiffer / EN Communities less

Stephanie Guzman stands above the entrane to Robber Baron Cave (right) as Joe Mitchell with Texas Cave Managment Association opens the gate on Wednesday, Sept. 24, 2014. The original entrance to the cave, now ... more

Photo: MARVIN PFEIFFER, Marvin Pfeiffer / EN Communities

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Joe Mitchell (left) of Texas Cave Managment Association leads a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in Bexar County with one mile of mapped passage. Photo by Marvin Pfeiffer / EN Communities less

Joe Mitchell (left) of Texas Cave Managment Association leads a tour of Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and ... more

Photo: MARVIN PFEIFFER, Marvin Pfeiffer / EN Communities

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White "cave bacon" in Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in Bexar County with one mile of mapped passage. Photo by Marvin Pfeiffer / EN Communities less

White "cave bacon" in Robber Baron Cave on Wednesday, Sept. 24, 2014. Robber Baron Cave, at the corner of Nacogdoches Rd. and Camellia Dr., is the longest and one of the most significant caves in Bexar County ... more

Photo: MARVIN PFEIFFER, Marvin Pfeiffer / EN Communities

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METRO - Mark Hampton, 8, left, and his brother, Shawn Hampton, 13, of Boerne, explore Robber Baron Cave next to the door for the former speakeasy during the cave's reopening event in San Antonio on Saturday, November 8, 2008. LISA KRANTZ/lkrantz@express-news.net less

METRO - Mark Hampton, 8, left, and his brother, Shawn Hampton, 13, of Boerne, explore Robber Baron Cave next to the door for the former speakeasy during the cave's reopening event in San Antonio on Saturday, ... more

Emergency personnel worked through the night to rescue a teenage girl from Robber Baron Cave after she became trapped there during a school field trip Thursday afternoon.

The San Antonio Fire Department first received a call that someone was stuck in the cave, located on the city's North Side, around 2:40 p.m., said Joe Arrington, public information officer for SAFD. By that point, the 18-year-old had been stuck for an hour, he said.

Firefighters pulled her out around 11:45 p.m. and she was transferred to San Antonio Military Medical Center for treatment.

Emergency personnel worked to remove a teenage girl from Robber Baron Cave Thursday, Mar. 8, 2018 after she became trapped there during a school field trip.

Media: San Antonio Express-News

She became lodged in an area called the "Hole in the Floor" 350 feet into the cave. The area has a "narrow circular opening that you have to pass through," Arrington said. The 18-year-old, who attends Robert E. Lee High School, has not suffered any injuries, he said, adding her arms and feet are not trapped while her torso is stuck.

She was hooked up to an IV while the rescue team attempted to free her, he said.

At p.m., SAFD Chief Charles Hood said firefighters built a support beneath the teen to help lift her out of the opening.

"At this time she is conscious. She is alert. She is a trooper," Hood said at the time. "She is still in good spirits after everything that she has been through."

The firefighters worked in 30 minute shifts using a chisel to carve through the rock to free the teen.